Air seal for kilns



' W. F. SELLERS. AIR SEAL FOR KILNS.

APPLICATION FILED APR-4, I922.

Patented Nov. 7, 1922.

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W. F. SELLERS.

AIR SEAL FOR KILNS.

APPLICATION FILED APR.4, 1922.

1,434,796, Patented Nov. 7, 1922.

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Patented Nov. '2,

WILLIAM F. SELLERS, OF BHANDYWINE HUNDRED, DELA'WABE, ASSIGNUR TO EDGE- MOOB IRON COMPANY. 01? EDGEMOOB, DELFAYWAEE, A OORIPQRATION OF DELA:

WARE.

AIR SEAL F0755 KILNS.

Application filed April 4, 1922. Serial No. 549,526.

To all whom it may concern.-

Be it known that l, iterati F. SELLERS, a citizen of the United States of r'imerica, and resident of Brandywine Hundred, county of New Castle, State of Delaware, have invented a certain new and useful Improvement in Air Seals for Kilns, of which the following is atrue and exact description, reference being had. to the accompanying drawings, which form a part thereof.

My invention relates to rotary cement kilns and has for its object to provide an improved. air seal between the end of the kiln and the opening in the kiln housing through which the gasesescape from the kiln into flue. The object of my invention is to provide an air seal the parts of which are especially designed to permit oi. the convenient assembly and detachment of the parts whereby replacement of one member can be conveniently and rapidly effected. the air seal being especially desl ned for the severe conditions of use.

The nature of my improvements will be bestunderstood as described in connection with the drawings in. which F igure 1 is a sectional elevation through the end of the kiln and the portion of the housing with which the kiln registers showing the air seal device in section.

Figure 2 is an enlarged sectional view of the air seal device with an indication in dotted lines at the bottom of the view showin how the air seal can be conveniently applied to a kiln having a tapered end.

Figure 3 is in part a face view taken on the section line 33 with certain members of the air seal construction shown to very full tent.

Figure 4 is a sectional view on the line 4-4: of Fig. 3 shown on an enlarged scale.

Figure 5 is a face view of the flat or seal ring indicated at J in the other drawings, and

Figure 6 an edge View of this ring.

A. indicates the end of the kiln. B the housing and B the opening through the housing through which the gases pass from the kiln to the flue. C is a channel iron frame secured to the face of the housing around the opening B to which is secured the cylinder indicated at l). The space between the frame C and cylinder D can be c0nveniently filled with concrete as indicated at L, Fig. 3. l) is the longitudinally extendmg key secured to the inside of the cylinder D, preferably two such keys being supplied on opposite sides of the cylinder. E, E, are spaced flanges secured to the end of the kil and preferably made in the form of cast iron angles a. indicated.

Extending inward from the edges of the flanges E are slots indicated at E, these slots being formed, as shown, in a series of sets, one set for each section of the sectional ring to be attached to the flange and each slot of each set being parallel to each other and parallel to a central radial line. F, F, aresectional rings to be attached to the flanges E, E, the sections being secured together by spliced plates indicated at H and bolts and nuts I, I, as clearly shown in Figs. 2 and 3. Each section of the ring F has projecting outwardly from it a bolt indicated at G, see Figs. 2 and a, the bolts beirigiso located that one will register with each of the slots E and the ring sectionsbeing'firmly-secured to the flanges E by nuts G"screwing1on the bolts and against the outer sides of the flanges, as shown in Fig. 4. J is a flat ring fitting in the cylinder D and extendingiin- 'ward at. right angles to this cylinder. This ring is preferably formed with slots J which it over the keys D so as to prevent the rotation of the plate while permitting it to move freely longitudinally of the cylinder D. The ring J fits between rings F, F, as shown in 2 and is preferably made up, as shown, of two sets of sectional plates lapping each other and secured together by rivets indicated at K. One set of plates is indicated at J and the other at JP, Fig.

Where the end of the kiln is tapered, as indicated in dotted lines at a, Fig. 2, a platform a to which the flanges F, E, can be attached, can readily be provided by securing to the tapered end of the kiln a bent plate indicated in dotted lines at (1 Owing to the warping of the kiln, the end of it to which the air seal is in part attached and in part connects, will generally move in an eccentric path with regard to the cylinder D and l have indicated in dotted lines at 0, (Z, the rel ative positions of these stationary parts with regard to the end of the kiln which may oc our in extreme cases, showing also in dotted lines at y the extreme inward position of the ring J, corresponding with this extreme eccentricity of movement of the end of the kiln in the cylinder D.

It will be obvious that if it becomes necessary to remove for repair or replacement the ring J, this can readily be effected by removing the outer ring F and it will also be obvious that outer ring F can be removed by detaching the spliced plates H holding its sections together, loosening the nuts G and removing the sectional ring, section by section, the removal of the ring sections being inade practicable and easy by the described arrangement of the slots E in parallel sets, one set for each ring section which makes practicable an outward rotary movement of the ring section, its attached bolts 6- moving readily through the parallel slots.

Having now described my invention; what I claimas new and desire to secure by Letters Patent, is:

1. In' combination with a rotary cement kiln and a kiln housinginto which the kiln opens, means for sealing the space between the end of the kiln and the housing, consisting of a cylinder surrounding the opening into the housing and secured to the housing, in combination with a flat ring extending inward from and at right angles to said cylinder and movable longitudinally therein, spaced flanges secured to and extending out- Wardly from the end of the kiln and rings macleup ofidetachable sections detachably secured on'the ihsideofjth'e flanges. and extending outwardiy. therefrom over the inner edgeio the inwardly extending ring aforesaid. a

2. In combination with a rotary cement kiln and a kiln housln-g into which the kiln opens, means for sealing the space between the end of the kiln and the housing, consisting of a cylinder surrounding the opening into the housing and secured to the housing, in combination with a fiat ring extending inward from and at right angles to said cylinder and movable longitudinally therein, spaced flanges secured to and extending outwardly from the end of the kiln, said flanges having a series of sets of slots cut through their outer edges, the slots of each set being parallel to each other and to a radial line passing through the center of the set and rings made up of detachable sections equal in number to the sets of slots cut in the flanges, detachably secured on the inside of the flanges by bolts secured to the sections of the rings and passing through the slots in the flanges, said sectional rings extending outwardly from the flanges over the inner edge of the inwardly extending ring aforesaid.

3. In combination with a rotary cement kiln and a kiln housing into which the kiln opens, means for sealing the space between the end of the kiln and the housing, consisting of a cylinder surrounding the open ing into the housing and secured to the housing, in combination with a flat ring extending inward from and at right angles to said cylinder and movable lmigitudiiially therein, said ring being formed of lapping sectional plates secured together, spared flanges secured to and extending outwardly from the end of the kiln and rings made up of detachable sections detachably. secured on the inside of the flanges and extending outwardly therefrom over the inner edge of the inwardly extending ring aforesaid.

WM. F. SELLERS.- 

